Block-forming machine.



PATENTED FEB. 119,190?.

Y YW;o.B1JRImI. v BLOCK PORMING MAGHIN'B; r

Pymonon Pump AUG. 2a; 190e' ISO v Ine/emr.'

rn: mmm! Perg-ns ca., wAsHmcfoN. nA c4 PATENTED FEB. 19, 1907.

W. C. BURRELL. BLOCK FOR-MING MACHINE.

APPLICATION FILED AUG.23. 1906.

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No. 844,709. PATBNTBD PEB. 19, 1907.

W.. C. BURRBLL. BLOCK FORMING MACHINE.

APPLICATION FITRI) AUG. 23. 1906.

5 SHEETS-*SHEET 3.

PATBNTED FEB. 19, 1907.

W. c. BURRBLL. BLOCK PORMING MACHINE.

APPLICATION FILED AUG. 23.1908.

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PATENTBD FEB. 19, 1907.

W. C. BURRELL. BLOCK FORMING MACHINE.

APPLICATION FILED AUG. 23. 1.906.

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`.WILLIAM C. BURRELL, OF BRADLEY, ILLINQIS.

BLOCK-FORIVHNG MACHINE.

Speciioation of Le ters Patent.

Patented Feb. 19, 1907.

Application filed August 23, 1906. Serial No. 331,724.

To all whom t may concern,.-

`Be it known that I, WrLLIAM C. BURRELL,

a'citizen of the United States, residing at- Bradley, in the State of Illinois, have invented a new and useful Blocli-Fo11ning Machine, of which the following is a specification.

My invention relates particularly to machines for forming hollow concrete blocks; and my primary object is to provide a machine of this character of improved general construction, durable in character, and handy in operation.

The invention is illustrated in its preferred embodiment in the accompanying drawings, in which- A Figure 1 represents a plan view of the improved machine in its closed condition; Fig. 2. a plan view of the machine in its open condition; Fig. 3, a vertical sectional view taken as indicated at line 3 of Fig. l; Fig. 4, a rear elevational view, partly broken, taken as indicated at line 4 of Fig. 3; Fig. 5, a broken sectional view similar to the section showmin Fig. 3, but showing the mold in its open condition; Fi 6, a plan view of a blank employed in orming a removable pallet; Fig. T, a view of said pallet in its completed condition, the view being partly in section; Fig. S, a section taken as indicated at line S of Fig. 7, and Fig. 9 a perspective view of a carrier employed for removing the pallet and the artiiicial-stone block from the machine.

In the preferred construction illustrated, A represents a frame, which may be of any suitable form; B, a mold mounted on the frame, and C a pair of horizontally-reciprocable cores movably mounted on the frame. The frame A preferably comprises end standards a, a bar a joining the end standards at their front portions near their upper ends, a bar a2 joining the end stand .trds intermediately near their lower portions, and a shaft a3 join- 'ing the end standards at their rea; portions at a distance above the bases thereof.

The mold B preferably comprises a rear vertical plate b, joined at its lower edge by pivots b to the upper portions of the framestandards a and equipped centrally at its uper portion with a rearwardly-exten ding arm iiz, which serves the double purpose of tilting the late b rearwardly and limiting the rearwar movement of said plate when the mold is opened; a front plate Z13, provided at its lower edge with hooks t, which engage studs bf', with which the end standards are provided, whereby the iront plate is pivotally and removably connected with the frame; a bottom plate b, equipped at its front edge with hooks t7, entered in slots bs, with which the plate b3 is provided near its lower edge, whereby the bottom plate may assume the relation to the front plate shown in Fig. 5 when the front plate is thrown to its horizontal position; a removable pallet b9, normally held in a vertical position adjacent to the front plate t when the mold is in the closed condition shown in Fig. 3 a pair of end plates bw, equipped with hooks b, enga ing the normally vertical pivots blz, carrie by projections t, extending from the end edges of the front plates b3, and a pair of locking-levers Zi, mounted on normally horizontal' pivots blt", projecting rerwardly from the rear ed es of the plates b1, as shown in Fig. 1, said evers having cams b1 engaging cam-locks b17 on the rear face of the rear plate b, near the end ed ges thereof.

'ihe rear plate b is capablel of Swingin rearwardly s ightly to the position indicate in Fig. 5. The hooks b4 of the front plate b3 are doubly curved t6) enable the front plate to drop to the horizontal position shown in Fig. 5 and be supported. in Said position b` the hooks engaging the studs b5. As an a ditioral support the frame member a is equipped centrally with a bracket-arm bw, upon which the plate b3 rests when in the position shown in F ig. 5. Thebottom plate b is readily rfinovabie from the front plate, as will be understood from Fig. 5, and the front plate is readily removable from the frame, as appears from the same iigure. has its lower edge supported on the front margin of the bottom plate b", as shown in Fig. 3, and mid pallet is equipped at its end edges with lugs bw. The plates b1 are equipped en their inner surfaces with enlargements or embossments b2", whose inner surfaces may be given any desired contour. These embossments are of a suitable size to nt between the pallet b9 and the rear plate b when the mold 1s closed 2nd have the lower edges b21, which overiies the lugs b1 of the pattern in the folded Condition of the mold. The rear plate t, thefront plate b3, and the pallet b9 are provided with alined apertures bz2, there being two sets 0f these apertures in the same horizontal plane, serving to receive the cores C. The construction of the pallet b9 is preferably that illustrated in Figs. 6 to 8, inclusive. A rectangular sheet-metal blank is formed with apertures t and cutaway c0r- The pallet b9 IOO IIO

ners 625, affording end wings b2 and lateral wings 627, which are folded downwardly along the dotted lines adjacent thereto and connested at their ends by angle-form members 528. The ond flanges b2 are provided with perforations b2, which receive the Shanks of the lugs b1, said Shanks being connected with the body of the plate by rivets passing through pcrforations b3" in the body of the plate. At the corners of the apertures b2* the motalis severed along oblique lines b1 and struck rearwardly, thereby forming lianges 532, forming margins about the apertures. The metal of the body of the pallet is struck inwardly, indicated at b, thereby forming recesses in what constitutes the lower surface of the building-block. The pallet is adapted to be removed from the mold by means of carrier Z134, comprising a vertical plate Z235 and plates b3, at right angles thereto, inturned flanges Z237 at the lower edges of the plates 6", and handles 53S on the outer surfaces of the plates b. The flanges b3 are adapted to be inserted beneath the lugs b1 at the ends of the pallet, thereby enabling the pallet and the building-block thereon to be removed from the mold.

The cores C have their rear ends equipped with perforate lugs c, which lit upon a shaft c and are firmly secured thereon by setscrews c2. The shaft c is formed integrally with or rigidly secured to a stem c3 at right angles to the shaft and movable in a guide c4, carried by arms c, pivoted at their lower ends on the shaft ai. The lower end of the stem c3 moves on a cam c, which has an angular stem supported at its angle on the shaft a3 and with its forwardly-projecting member irmly secured to the cross member a2 of the frame A. The member c is equipped at its rear portion with a perforate threaded lug c7, which receives a set-screw es, serving to limit the rearward movement of the cores. The member c4 is equipped with laterally-extending arms c, having their extremities bent upwardly to fofm handles co, by means of which the member c4 may be swung up on the shaft a3 as a center, in which movement the stud c3 rides upon the cam c6. The cam c6 is of suitable form to cause the cores C to move to pursue a substantially horizontal movement when the member c4 is swung about the shaft a3 as a pivot, it being understood that the cores are supported in this movement by the stem c3. At the junction of the stem c3 and the shaft c is an enlargement or head c, formed with a bifurcation or recess cl2, which serves to receive the arm b2.

The operation of the improved machine will be readily understood from the foregoing detailed description. Assuming the mold- :box to be in the closed condition indicated in Fig. 3, the lower` portion of the mold may be filled, thereby forming the face of the building-block, and thereafter the handles 01 may be depressed, thereby inserting the cores C. The operation of filling the mold may then be completed and any surplus material scraped olf with a straight-edge drawn across the to of the mold. The cores C may then be withdrawn by returning the handles c10 to the position indicated in full lines in Fig. 3. The locking-levers b14 may then be swung up to release the end plates of the mold from the rear plate thereof, thus allowing the rear plate of the mold to tilt backwardly to the position shown in Fig. 5. The body of the mold may then be swung forwardly until the bottom of the mold assumes the standing position shown in Fig. 5, the connections being such as to permit said bottom in its standing position to inc-line rearwardly slightly. The end plates of the mold may then be dropped to the horizontal position shown in Fig. 2, leaving the pallet or platen b9 free to be engaged by the carrier b34 for the purpose of removing the pallet and the block resting thereon from the machine.

It is obvious that the pallet and end plates of the mold may be removed at will and replaced by other similar parts bearing any suitable designs.

That I regard as new, and desire to secure by Letters Patent, is-

l. In a machine for the purpose set forth, the combination with a mold having a corercceiving aperture, of a suitable frame, a member mounted to swing with relation thereto, a core actuated by said member, and adapted to move into said aperture, and cam connections between the frame and core, for the purpose set forth.

2. In a machine for the purpose set forth, the combination of a mold having a corereceiving aperture, of a suitable frame, a member mounted to swing with relation thereto and equipped with a guide, a core equipped with a stem movable in said guide, and a cam supporting said stem.

3. The combination of a frame, a mold having a pivoted rear plate provided with an aperture, a swinging member mounted on the frame in the rear of said plate, means for actuating said swinging member, a cam, and a core having a stem slidably connected with said swinging member and bearing upon said cam.

4. The combination of a frame, a mold supp ortcd thereon and provid;d with two sets of core-receiving apertures, a pair of cores movable in said apertures and mounted upon a stem, a swinging member mount- (d on the frame and equippcd with a guide receiving said stem, and a cam mounted on the frame and supporting said stem.

5. The combination of a frame7 a mold supported thereon ard provided with two sets of apertures, a pair of cores movable in said apertures and equipped with a stem, a

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member pivoted on the frame and equipped with actuating-arms extending forwardly at the ends of the frame, said stem having sliding connection with said swinging member, and a cam supporting said stem.

6. In a machine for the'purpose set forth, the combination of a frame and a mold-box mounted on the frame comprising a rear plate', 'a front plate having detachable pivotal connection with the frame serving to permit the front plate to drop into a horizontal position and be sustained in said position, and a bottom plate having hooked connection with the front plate near the lower edge thereof for the purpose set forth.

7. A machine for the purpose set forth comprising a frame, and a mold-box mounted thereon comprising a rear pivotally-supported plate, a front plate equippcd at its lower edge with doubly-curved hooks engaging suitable sockets with which the frame is providd, a bottom plate having hook connection with the front plate near the lower edge thereof, ard a pallet adjacent to the front plate having an cdge resting upon the bottom plate adjacent to the hook thereon.

8. The combination of a frame, a pair of rearwardly-movable cores supported there on, and a mold in which said cores extend, said mold comprising a pivotally-supported rear plate having a core-receiving opening, a front plate having detachable pivotal connection at its lower edge with the frame and equipped at its ends with pivots projecting a distance from the ends of the front plate, and plates having hooks engaging said pivots, a pallet having lugs projecting from its ends which underlie the end plates in the closed condition of the mold, and means for securing the free edges of said end plates to the rear plate for the purpose set forth.

9L The combination of a frame, a rearwardly-movable core mounted thereon, and

a mold-box mounted on the frame and in which said core is entered, said mold-box comprising a rear movablyextending plate equipped with a rearward]y-extending arm, a pivotallv-supported front plate, a bottom plate detachably connected with thefront plate, and plates pivotally connected with the front plate, and means for securing the end plates to the rear plate.

1.0. A pallet for the purpose setforth comprising a rectangular sheet-metal member having notched corners and the flanges thereb)T formed bent at right angles to the body of the plate, the body of the plate having apertures therein, with the metal adjacent to the apertures struck outwardly to.

form flanges for the purpose set forth.

l 1 A pallet for the'purpose set forth comprising a rectangular sheet-metal plate having notched corners and the flanges thereby formed struck outwardly at right angles to the bod v of the plate, clips joining said flanges, lugs connected with the end flanges,

apertures through the body of the plate wi th the bordering metal struck outwardly, and cmbossments on the bodyT of the plate struck inward for the purpose set forth.

VILLAM C. BURRELL,

In presence of J. H. LANDES,

C. 7. NASHBURNE. 

